Heinbich ostermann and chaeles laceoix



UNITED STATES PATENT OFFICEQ HEINRICH OSTERMANN AND CHARLES LAOROIX, OFGENEVA, SNVITZER- LAND, ASSIGNORS TO THE USINE GENEVOISE DEDEGROSSISSAGE DOR,

OF SAME PLACE.

M ETALLIC ALLOY.

SPECIFICATION forming part of Letters Patent No. 388,145, dated August21, 1888.

Application filed April 19, 1888. Serial No. 271,212.

I?) all whom it may concern.-

Be it known that we, HEINRICH OSTER- MANN, chemist, and CHARLES LACROTX,director of the Usine Gcnevoise de Dgrossissage Dor,both residing atGeneva, in Switzerland, have invented a new and useful Metallic Alloy,of which the following is a specification.

Our invention consists of a new metallic al- 10y intended to be used inplace of steel,especially in manufacturing such parts of watches orchronometers which are liable to alter the good acting of the watch orchronometer when they get magnetized or oxidized, especially inmannthcturing balance-wheels and spiral springs for watch-escapelnents.

Our metallic alloy is composed of gold, palladium, rhodium, copper,nickel, manganese, silver, and platine. Those metals are suitablycombined together in the following proportions: thirty to forty-fiveparts of gold,twenty to thirty parts of palladium, 0.1 to 5 parts ofrhodium, ten to twenty parts of copper, one to ten parts of nickel, 0.1to 5 parts of manganese, 0.1 to 5 parts of silver, and 0.1 to 2.5 partsof platine.

(No specimens.)

Having thus described our invention, we claim- 1. An alloy composed ofgold, palladium, rhodium, copper, nickel, manganese, silver, andplatine, for the purpose specified.

2. An alloy composed of thirty to fortyfive parts of gold, twenty tothirty parts of ndia diun], one-tenth of a part to five parts ofrhodium,ten to twenty parts of copper,one to ten parts ofnickel,one-tenth ofa part to live parts 55 of manganese, one-tenth of apart to five parts of'silver, and one-tenth ofa part to two and a halfparts of platine, substantially as described, and for the purposespecified.

In testimony whereof we have signed our names to this specification inthe presence of two subscribing witnesses.

HEINRICH OSTERMANN. CHARLES LAOROIX.

\Vitnesses:

LYELL T. ADAMS, E. IMERSCHNEIDER.

